ON Semiconductor NB3L208KMNGEVB User Manual

NB3L208KMNGEVB

NB3L208K
Evaluation Board
User's Manual

Introduction

The NB3L208K is a differential 1:8 Clock fanout buffer
with High-speed Current Steering Logic (HCSL) outputs.
Inputs can directly accept differential LVPECL, LVDS and
HCSL signals. Single-ended LVPECL, HCSL, LVCMOS,
or LVTTL levels are accepted with a proper external V
reference supply. These signals will be translated to HCSL
and eight identical copies of Clock will be distributed,
operating up to 350 MHz.

This manual should be used in conjunction with the device
datasheet, which contains full technical details on the device
specifications and operation.

TH

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EVAL BOARD USER’S MANUAL

This evaluation board manual contains:

• Information on the NB3L208K Evaluation Board

• Block Diagram and Board Schematic

• Assembly Instructions

• Test and Measurement Setup Procedures

• Bill of Materials

Top View Bottom View

Figure 1. NB3L208KMNGEVB Top and Bottom View

© Semiconductor Components Industries, LLC, 2016

April, 2016 − Rev. 1

1 Publication Order Number:

EVBUM2295/D

Equipment Required

1. DC Power Supply

2. Oscilloscope

3. Phase Noise Analyzer

4. Connectors for DC Power Supply

5. 50-W SMA Connectors for I/Os

Block Diagram

Power Supply

NB3L208KMNGEVB

QUICK START LAB SET-UP USER’S GUIDE

VDD GND

VDD GND

Note: Balun Connected to Outputs Only during Phase Noise Testing.

CLK_IN CLK_IN

NB3L208K

Generator Tek DPO70404Agilent E5052B

DIF_0−7

DIF_0−7#

DIF_0−7

DIF_0−7#

Figure 2. Time and Frequency Domain Block Diagram

Power Supplies

Each VDD, VDD_0 (VX on board), GND_0 (DUTGND
on board) and SMAGND power supply has a separate
side-launch banana jack located on bottom side of the test
board (as shown in Figure 1).

SSA Signal

Source Analyzer

Balun

CH1 CH2 CH3 CH4

HCSL Outputs

HCSL outputs are typically loaded and terminated with

a series resist o r ( R

) = 33-W and 50-W to ground. This

SERIES

can be easily accomplished by connecting the HCSL outputs
to the 50-W internal impedance in the oscilloscope. There
are on-board R

= 33-W termination resistors installed

SERIES

for each HCSL output.

R

= 33 W

SERIES

50 W to Ground via
SMA Connector to
Oscilloscope

Figure 3. Set-Up for HCSL Output

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